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When balancing the equation below, the coefficient of K3PO4 would be: P4O10  +  KOH  →  K3PO4  +  H2O _______

The formula weight of Zn(ClO4)2 is ________ amu.

Given the Chart below, fill in all of the blanks that contain a BOLD RED number.  For charges, put in the number first then the sign of the charge (+ or -). Symbol Number of Protons Number of Neutrons Number of Electrons Net Charge Mass B 5 6 5 1 11 Fe 2 28 24 3 4 As 5 6 7 3+ 76 8 9 16 18 10 31

The mineral leadhillite, which is essentially Pb4(SO4)(CO3)2(OH)2, contains what percentage of oxygen by mass?

Which of the following are combustion reactions? 1)  CH4(g)  +  O2(g)  →  CO2(g)  +  H2O(l) 2)  CaO(s)  +  CO2(g)  →  CaCO3(s) 3)  PbCO3(s)  →  PbO(s)  +  CO2(g) 4)  CH3OH(l)  +  O2(g)  →  CO2(g)  +  H2O(l)

The SI (International System of Units) unit for mass is ________.

A 10.00 g sample of solid sodium bicarbonate (the active ingredient in baking soda) completely decomposes into solid sodium hydroxide and carbon dioxide gas when heated.  After the sodium hydroxide cools, it has a mass of 4.76 g.  What mass of carbon dioxide must have been formed?

3.337 g/cm3 = ________ kg/m3

the team won the championship

since the students arrived early